Aldicarb violations in Texas
102 active public water systems in Texas had a Aldicarb violation in the past three years. What Aldicarb is and why it matters.
Health effects: Aldicarb is highly acutely toxic through acetylcholinesterase inhibition, disrupting nerve signal transmission at synapses. Symptoms of acute poisoning include excessive salivation, muscle tremors, nausea, convulsions, and at high doses respiratory arrest. Even short-term exposure above the MCL poses significant risk; children and the elderly are most vulnerable.
Systems with a Aldicarb violation
Latest quarter first, then largest first| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Aqua WSC Bastrop County |
86,325 | 5 | 1 | |
|
Johnson County SUD Johnson County |
65,517 | 2 | 0 | |
|
Clwsc Canyon Lake Shores Comal County |
44,196 | 6 | 0 | |
|
City of Sherman Grayson County |
43,645 | 2 | 0 | |
|
Bethesda WSC Johnson County |
33,441 | 2 | 0 | |
|
City of Kerrville Kerr County |
30,530 | 3 | 0 | |
|
Benbrook Water Authority Tarrant County |
25,616 | 3 | 0 | |
|
Acton MUD Hood County |
20,458 | 2 | 0 | |
|
City of Athens Henderson County |
17,934 | 6 | 0 | |
|
City of Uvalde Uvalde County |
17,450 | 3 | 0 | |
|
City of Jacksonville Cherokee County |
14,420 | 3 | 0 | |
|
City of Willis Montgomery County |
14,133 | 9 | 2 | |
|
City of Van Alstyne Grayson County |
10,644 | 7 | 0 | |
|
Harris County Wcid 109 Harris County |
10,134 | 2 | 0 | |
|
Concord Robbins WSC Leon County |
10,035 | 5 | 1 | |
|
City of Wharton Wharton County |
8,756 | 5 | 0 | |
|
Sagemeadow Utility District Harris County |
6,975 | 2 | 0 | |
|
Two Way SUD Grayson County |
6,804 | 3 | 0 | |
|
North Park Pud Harris County |
6,708 | 3 | 0 | |
|
Bethany SUD Johnson County |
4,503 | 3 | 1 | |
|
Thunderbird Utility District 1 Fort Bend County |
4,203 | 3 | 0 | |
|
City of Whitesboro Grayson County |
4,192 | 3 | 0 | |
|
City of Montgomery Montgomery County |
3,771 | 3 | 0 | |
|
South Newton WSC Newton County |
3,729 | 4 | 0 | |
|
Oakmont Pud Harris County |
3,450 | 4 | 0 | |
|
Woodcreek Utility CO 1 Hays County |
2,700 | 1 | 0 | |
|
Wright City WSC 2 Smith County |
2,124 | 4 | 1 | |
|
City of Huntington Angelina County |
2,014 | 7 | 2 | |
|
City of Naples Morris County |
1,908 | 11 | 3 | |
|
City of Linden Cass County |
1,813 | 9 | 3 | |
|
South Ellis County Water Supply Ellis County |
1,767 | 4 | 1 | |
|
City of Goldthwaite Mills County |
1,738 | 3 | 1 | |
|
Coles Crossing Chambers County |
1,521 | 6 | 3 | |
|
Wright City WSC 1 Smith County |
1,350 | 3 | 0 | |
|
City of Asherton Dimmit County |
1,225 | 6 | 0 | |
|
Mountain View Subdivision Hood County |
1,029 | 6 | 0 | |
|
Arlam Concord WSC Rusk County |
990 | 3 | 1 | |
|
City of Trenton Fannin County |
820 | 6 | 0 | |
|
Fulbrook Subdivision Water Plant Fort Bend County |
807 | 6 | 0 | |
|
M S WSC McLennan County |
744 | 6 | 2 | |
|
City of New Deal Lubbock County |
729 | 4 | 0 | |
|
City of Como Hopkins County |
702 | 5 | 1 | |
|
Colorado County Wcid 2 Colorado County |
654 | 6 | 3 | |
|
Buena Vista WSC Shelby County |
647 | 4 | 0 | |
|
Fayette County Wcid Monument Hill Fayette County |
575 | 3 | 1 | |
|
Benchley Oaks Subdivision Brazos County |
567 | 2 | 0 | |
|
The Landing II Subdivision Liberty County |
567 | 3 | 0 | |
|
Ranch Oaks Subdivision Tarrant County |
561 | 3 | 0 | |
|
Church Hill WSC Rusk County |
516 | 6 | 1 | |
|
Sunchase Meadows Hood County |
486 | 2 | 0 |
About this data
A system is counted once if any of its violations in the past three years involved Aldicarb, including monitoring and reporting lapses. Rules violated and status in the table are for the whole system, not Aldicarb alone.
Source: the U.S. EPA's Enforcement and Compliance History Online system (ECHO), which publishes the federal Safe Drinking Water Information System. EPA's terms and values are shown as published. The Texas records are from EPA's data refresh of Oct 7, 2026; EPA refreshes this data quarterly, and states report to EPA with a lag of three to six months, so the newest violations may not appear yet.